Blacksmith s tongs



(No Model.) W. `M. HAWORTH.

BLAGKSMITHS TUNGS. Y No. 478,600. Patented July l2, 1892,.-

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UNITED STATES PATENT OFFICE.

VILLIAM M. HAWORTH, OF DEOATUR, ILLINOIS.

BLACKSMlTHS-TONGS.

SPECIFICATION forming part of Letters Patent No. 478,600, dated July 12, 1892.

Application filed April14, 1892. Serial No. 429,177. (No model.)

To allen/hom, it myconcern:

Be it known that I, WILLIAM M. HAWORTH, of Decatur, in the county of Macon and State of Illinois, have invented certain new and useful Improvements in Blacksmiths Tongs, of which the following is a specication.

This invention relates more particularly to tongs for blacksmiths and other metal-workers, though the principle is equally applicable to pinchers, wrenches, and gripper's; and it consists in the details of construction and combination of parts,which enable the jaws to be adjusted with relation to each other in 0rder to properly grasp either large, small, or intermediate objects, and `which with incidental features of novelty are hereinafter set forthin detail, and specifically claimed.

In the drawings accompanying and forming a part of this specification, Figure 1 represents a pair of tongs with the jaws adjusted to grasp very small objects. Fig. 2 shows the opposite side of the same tongs with thejaws at the opposite extreme of adjustment. Fig. 3 is a perspective representation of a pivotblock, and Fig. 4 shows details in the construction of the pivot-bolt.

The tongs consist of two duplicate bars l and 2,which have details as follows, and which are secured together adj ustably by means of the pivot-blocks 3 and the pivot-bolt 4. The handle of one bar is seen at l and l. The handle deflects obliquel y, forming a pivot p0rtion, which is slotted longitudinally at 1b and which has on its outer surface notches, teeth, or corrugations lc contiguous to the slot- The jaw ld is a continuation ot' the deflected 'part l, and it is parallel, or nearly so, with a line drawn lengthwise through the handle.

The part 2 is, as before stated, a duplication of bar l, andV 2a represents the deiiected part, 2" the slot, 2 the corrugations, and 2d the jaw, as in the description of bar l. There are twogpivot-blocks 3, each having a bolthole/3 and a rib 3b, adapted to the corrugations of the tong-bars. The pivot-blocks are placed one on each tong-bar,with the ribs resting in depressions of the corrugations, and they are secu red together by bolt 4, which has I the round bearing 4, adapted to the slots of the tong-bars, the diminished and threaded end 4b, adapted to the wing-nut 5, and the shoulder 40,' which prevents the nut from binding the bars together. The bolt holds the pivot-blocks in position Von the corrugated surfaces, and the blocksin turn hold thebolt in position in the slots of the bars. Whenit is desired to adjust the jaws, the nut 5 is loosened on the bolt, the pivot-blocks are shifted to an equal extent in the same relative direction on the corrugated surfaces, and the nut is againtightened. The bolt forms a pivot for both bars, thus doubling the wearing capacity as compared with a pivot fixed in one bar, and when the bolt tinallybecomes worn out it is easily renewed.

The adjustment of the jaws is easily and quickly effected and the tongs are calculated to take the place of the greater number usuallykept to meet all requirements.

l. In tongs or similar tools, the combination of the bars havingoblique slots and corrugations contiguous to the slots, the pivot-blocks having ribs adapted to the corrugations, and a bolt extending through the slots and the blocks and adapted to hold the blocks in close contact with the corrugated surfaces, as set forth.

2. In tongs orsimilar tools, the combination of the bars having each a deflected and slotted portion intermediate its ends, with corrugations contiguous to the slots, the pivotblocks having ribs adapted to the corrugations, the pivot-bolt adapted to the slots and to the blocks and having a shoulder distant from the head something more than the combined thickness of the bars and block, and also having a threaded end beyond the shoulder, and the nut adapted to the threaded end of the bolt, as set forth.

In testimony whereof I sign myname in the presence ot' two subscribing witnesses.

WILLIAM M. HAWORTH. Attest:

E. N. GRAY, C. L. SMITH. 

